Grille



H. I. STOVER March 14, 195@ GRILLE Filed Jan. l5, 1947 l I I H770 NEX'Patented Mar. 14, 1950 UNITED STATES PATENT OFFICE I '2,500,330 Y IGRILLE Hugh I. s't'qver, Glendale, Calif'.

Application January 13, wirfseriainm 721,746

1 1 Claim.

. The principai object army invention istie provision of an air owgrille wherein structural characteristics make possible reduced staticpressure, an increased volume of air and greater C. F. M. at the face ofthe grille than is possible with any standard grille the open marketaffords;

An important object of the herein invention is the provision of a grilleproviding dual deflection of the air stream regulatory at will so as todeect the air stream upwardly, straight ahead, or downwardly, at thesame time left or right as may be desired;

A further object of the invention is the provision of a grille providinga greatly increased Volume of air at any given foot velocity overstandard grilles and registers the market affords, and whereinadjustment of the movable blades to direct the direction of air flow mayreadily be accomplished without resort to a wrench as is commonlynecessary with all grilles heretofore produced;

And a further object of the herein invention is the provision of agrille highly eioient in action, and structurally designed to present apleasing appearance.

I attain these objects by the grille disclosed in the accompanyingdrawings in which:

Figure 1 is an elevation of the grille with a part thereof broken awayto more advantageously disclose its structure;

Figure 2 is an end elevation partly broken away to better disclose theinterior of the grille;

Figure 3 is a side elevation;

Figure 4 is a section on line 4 4 of Fig. 1;

Figure 5 is a section on line 5 5 of Fig. 1, and

Figure 6 is an end View of a modified form oi blade adaptable to thegrille.

Similar numerals of reference indicate like parts throughout the severalviews.

The grille proper is provided with a conventional grille box IU open atfront and back to provide for the passage of air. It has a flange IIdesigned to frame the opening wheresoever provided for setting thegrille.

A transverse bar I2 having its ends fixed against two walls of the box Iprovides a stabilization of said walls and divides the face of thegrille.

A plurality of pivoted blades I3 are provided transverse the grille atright angles to said bar I2 and are notched at I4 to receive said bar.The latter is loose fitted into the notch I4.

The blades I3 are pivoted upon blisters I5 provided on two walls of thebox I0, said blisters acting as pivots inserted into holes I6 providedon the ends of the blades I3.

Other holes I'I are provided in the ends of the blades I3 to receivedentitive blisters I8 provided as stops on the same walls of the box Il)carrying the yblisters I so that the blades I3 may be set in eitherdirection up to an angle of as indicated by broken lines in Fig. 4.

The blades I3 are in general, tear drop shaped with long trailing sidesso that air currents breaking against the thick edge of said blades areinduced to iiow freely past the blades with a vacuum pull at thetrailing edges and with less static pressure due to vacuum and thecenter line trailing edges as herein provided.

A movable louver is provided at the intake side of the grille. It isdesigned to direct the ow of air current in the box or to stop said flowentirely.

The louver embodies a plurality of blades I9 pivoted at their ends as at20 so as to overlap when the louver is closed as indicated by brokenlines in Fig. 2. It is provided with a bar 2| pivoted to the blades I9as at 22 so that the blades I9 are moved in unison. The latter bladesare shown as bulbous at their leading edge 23 to provide a streamlineeiect on the air currents.

A modification of the blade I3 is shown in Fig. 6

where said blade designated as I3 as shown as formed from sheet metal.

The grille is structurally produced from light materials readilyobtainable in the open market and at no great cost.

The blades are arranged to frictionally ride freely and may be movedwith ones iinger or any suitable object, a lead pencil for example, nowrench being required. They are secured in adjustable position and maybe used interchangeably in associated arrangement with one another, aportion thereof, for example, may be set to deflect the air current oneway, the balance to drect it another. Moreover, the horizontallypositioned blades may be used independently from the verticallypositioned blades, or vice-versa.

The grille is ideal for air conditioning systems, for example, and maybe produced in varying sizes, and assembled at low cost.

As numerous apparently diirerent embodiments and changes in structuremay from time to time suggest themselves without departing, however,from the scope thereof herein shown and described, it is intended thatthe description and drawings thereof shall be interpreted asillustrative and not in a limiting sense.

What I do claim, however, is:

In an airiiow grille, a grille box open at its front and back forpassage of air therethrough, a rigid cross bar carried by and dividingsaid box, and a plurality 'of grille blades extending across said box atright angles to said bar and being pivoted i; at their ends to voppositesides of said box so asy to lie in spaced parallel relation to oneanother subject to individual tilting in opposite direction, said bladeshaving rounded wider edges disposed innermost in said box and narrowtrailing portions extending therefrom and provided with slots in whichsaid cross bar extends, the outer edges of said blades being in the sameplane with the outer edge of said bar and the outer edges of the grillebox, and a plurality of integral projections on said box, said bladeshaving openings in the 5 ends thereof in which said projections aremounted to form pivots for said blades, said #blades having additionalopenings in the ends thereof and additional integral projections on saidbox arranged to extend into said additional open- 10 ings for holdingthe blades in adjusted positions.

HUGH I. STOVER.

REFERENCES CITED The following references are of record in the 15 le ofthis patent:

Number Number UNITED STATES PATENTS Name Date l Tuttle Nov. 14, 1871Sternberg Apr. 9, 1929 Molina June 25, 1929 Le Grand Aug. 16, 1932 FoxMar. 17, 1936. Anderson Aug. 24, 1937 Ditzler Feb. 9, 1943 Fiedler May23, 1944 Davis Feb. 19, 1946 FOREIGN PATENTS Country Date Great BritainJune 21, 1917 Great Britain Feb. 6, 1941

